Hydraulic jack.



PATENTED APR. 7, 1908.

F. F. ASHMORE.

HYDRAULIC JACK.

APPLICATION FILED JULY 24. 1907.

, Ill- 95 5 1 Q l/9i ha eases for use when detaching a wheel,

FRANK F. asimoaa, or O'1'1AWa,'KANSAS.

HYDRAULIC on.

To all whom itmwy concern:

- Be it known that I, Faamr F. Asmroan, a citizen of the United State's,resid' at 0t 'tawa, inthe county of Franklin and tate of Kansas, haveinvented-certain new and useful I-m vements in Hydraulic Jacks, of whichefollo is a specification.

My invention re atesto hydraulic jacks and particularl contemplates theprovision of a device 0 this character embod within itself an improvedconstruction and provided with improved detachable elements or performcertain other functions supplementalto t e functions of the jack.

My invention further and specifically resides in the following featuresof construction, arrangement and o eration as will be hereinafterdescribed wit reference to the accompan .,dra forming a part of thisspec' catlon, in w 'ch like numerals are used to designate like partsthroughout the several figures, and in which Figure 1 is a pers ctiveview of my improved jacks, Fig. 2 1s avertical lo 'tudinal sectionalview-taken therethrough, ig. 3 is an elevation of the jack-headattachment to.

e e ainst an axle, Fig. 4 is an elevation sli gli ly i n perspective ofa connecting bar 5 is a ers ctive view of the s oke e aging head ibr azljustable attachmen t upon file connecting bar shown in Fig. 4, an Fig.6 is ,an elevation of the jacket 6 rating crank shaft.

In the practical em odiment 'of my invention I provide an outer casing 1threaded at its lower end within the bore of an enlarged base 2 haslotted ears 3 exten wardly there om. The inner oas' 4 1s arranged totelescopically slide within t e outer casing 1 and is threaded at itsuppler end within the enlarged head 5 having a c amber 6 formed thereinand having a projecting portion 7 through which is rotatively journaledan operating shaft 8 0 ing a crank 9 rigidly secured thereon anprojecting centrally within the chamber 6. The operat' shaft 8 isprovided with a slotted enlarge end 10 adapted for the reception of thereduced end of the operating handle 11 having a lug 12 projectingtherefrom and ada ted to engage a ug 13 roject' from the-jac head 5, tolimit the ownwar movement of said handle when the same is normallyoperating to actuate the inner casing 4 upward and out of the outercasing 1.

The inner casing 4 is internally threaded at of-Letters Patent.

Application M July 8!, 1807. Serial No. 886,841.

tending cillate the crank 9 an movement to the connecting ro .20-

mama April 7; 190a.

its lower and for engagement therein of a. pump castmg comprising anupwardl explston cylinder 14, an outlet v ve 15 extending downwardlyopposite said piston cylinder and an intake valve 16 arr ed at one sideof said piston cylinder 14. e intake and outlet valves, 15 and 16respectively, as shown in the drawin comprise ordinary ball valvesnorinally he (1 upon their seat by means of coil 5 rings, that saidvalves may be of'various ot or types without matenally' changin theworking of the jack as will be seen. j n the opposite-side of the pistoncylinder 14 from the intake valve 16- 1s arr d a relief valve 17comprising a ball, spring seated upwardly against its seat and having astein- 18 rojectingthrough a guide 19 formed inte inder 14 and exten ingupward slightly above said cylinder 14. The cranl9 rigidly connected to,and extending from the operating shaft 8 is pivotally connected at itsend to the downwardl extending connecting rod 20 having pivot yconnected at its. lower end a piston 21 arranged to project within thecylinder 14.

The operation will thus be as follows. The handle 11 being inovedalternately u ward and downward as with an ordinary jaclr the partialrotations thus 'ven shaft 8 will osimpart the reci rocato and t e piston21 within the cylinder 14. It will be understood that the inner c linder4 7 comprises a storage chamber for t e liquid or fluid used, an pon theupward movewith the iston cylment of the piston 21 said fluid will besucked within the cylinder 14 through the intake valve 16. In likemanner, upon the down- 7 ward movement of piston 21 said fluid withinthe cylinder 14 will be in turn, forced through the outlet valve 15 intothe bore of the base 2 and into the outer casing 1 effectin thereby aadual up-liftin of the inner cy inder 4 wit in the outer cy inder 1. To

release the pressure under the inner cylinder 4,' the piston 21 isprovided with an integral collar 22 adapted to strike the stem 18 of therelief valve 17 to force said valve downwardl off its seat and allow theliquid to flow bach therethrough from the outer casin 1 into the innercasing 4. Upon the norma actuation of the operating handle 11 itsprojection 12 will strike the lug 13 upon the jack head 5 to limit thedownward movement of said handle and prevent the collar 22 of piston 21from striking the valvestem 18, and it is therefore necessary to reversethe handle 11 from the position shownin Fig. 1, thus turning itsprojection 12 u wardly, in order that a further downwar movement may behad to allow said collar 22 and stem 19 to engage.

Inorder to effect the removal of the vehicle wheel which is sometimesver difiicult, I provide an operating bar 23 bifurcated at one end forinsertion about the upstanding ears 3 of the base2 and rovided with openings adapted to aline with the openings in said ears. for the readyinsertion of a pm to lock the same together. The operating bar 23 isprovided W1th a series of openings 24 adjacent its other end, which isshaped to receive a spoke head 25 having openings arranged to be alinedwith selected ones of the openings 24 and to be locked therewith by asecond pin. The operating bar 23 is ada ted to ro'ect between the spokesof the w eel,

Wit t e head 25 lying thereagainst upon the inside of said wheel, whilethe jack pro or is placed against the end of the axle an in alinementtherewith, so that when the base 2 and the outer casing 1 move outwardlfrom the inner cylinder as they will do in this position, the wheel willbe ulled from said axle. In this connection te jack head -5 .may beprovided with a threaded bore 26 adapted to receive a threadedprojection 27 of a supplemental head 28 having an elongated extension 29arranged to abut the end of the axle andvof substantially the samediameter in order that the slide may bereadily sli ed from said axleupon said extension. 7 aving thus fully described my invention, I claim:4

In a wagon or carriage jack, the combination of the inner and outercasings, one of which is adapted to abut the ends of the carriage axle,means for forcing said casings apart, connecting rods detachably carriedby one of said casings and having a plurality of alined openings formedin its length, and

wheel engaging'elements ada tedfor connection within a selected one 0said openings,

substantially as described.

,In testimony whereof 'I afiix my signature in presence of twowitnesses.

FRANK -F. ASHMORE.

Witnesses:

J. B. TOPPING, W. L. JAOOBUS.

